Side bearing.



` narran ai@ fWILLIAll/I A. IBOCK, OF CHICAGO, ILLINOS, ASSIGNYEL T() `WIILLXAM H. MINER, 0F

CHAZY, NEW YRK.

SEDE EEARNG.

Specification of Letters Patent.

Patented tici'. illl To all whom t may concern: v

Be it knownfthat I, VtlILLrAM A. Boon, a citizen of the United States, residing at Chicago, in the ,coun of Cook and State ot Illinois, have invented a certain new and useful Improvement in'Side Bearings, oi? which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

`This' invention relatesV to improvements in side bea-rings. u 2

One object of the invention is to provide a simple and etiicient sidev bearing. including a bodily rolling` anti-friction element, wnich side bearingr consists of a minimum number or' parts and so designed that the anti-'friction element autoinatically returns to normal after each actuation under the influence of gravity. x

nother and incre specific object of the invention is to providean anti-friction sidi, bearing oit' the type above indicated wherein the anti-friction element is bodily elevated during its actuation so th. on the eleinent in rotarA it., toi'iornalfis increased, the arra ment being' such that the effective hcig. t o1: 'the engaging surface ot' said element is maintainedconstant, the bodily elevation of said element as an entiret);v being compensated for by a rorrespendingv decrease in the radins of thiI hearingY surface of said element to preserve said nniiorin height.

In the drawing' 'forming part of this specification, Figure l is a vertical, sectional view ot' Yportions ofi body and truck holst-eins of a car showin .my improvements in connection tl icrewith. .llhe full .lines ot". the antifriction element indicate its normal position and the dotted lines the position assumed at the end ot' its movement in one direction. lig. 2 is a vertical, sectional View, taken substann tially on the line 2-2 of Fig. l. l o

-In said drawing, l() denotes kthe upper portion of a truck bolsteroi" a railway car and 1l the under side of an opposed body bolster, the saine being pivoted in the usual manner as well understood in this art. The improved side bearing, as shown, consists merely of two elements, a. box-like base or retaining casting A and the anti-friction element B.

.The base castings/. is of substantially hollow rectangular box-like torni, having a gravity ett'ect lower Vall ll secured by ears 13 to the bodv bolster; upstanding side walls lei-145. and` end walls L17-15.

Each of the side walls lil is recessed, as indicated at 1G. so as to forni oppositelv and. 60 upwardly inclined runways Aor bearings. l'T-li, as clearly shown in Fig'. l. i

T he antisfriction element preierablvmade solid and has oppositeln extended trunnions 18min?? operating'.within said recesses l5 and rollingupon said inclined bearsy ing seats 1T. The upper portions ot the side `walls or' the casting); A are suitablv cut 1 away, as indicated at 19. in order to permit insertion of saidtrunnions into the recesses 1G. The trunnions 18 are eccentricallv disposed with respect to the hearingsurface 20 of the element B, as will be apparent frein inspection ot l. Said oearii'ia surface 520 so designed that the radius `iroin ythe center or laxis ot the trunnions i8 to the no ierinost point.` er". said surface 2O when the element is in the position shown in. full lines in Fig'. l, is a niaxiininu. The distance from said surface 2G to the center oi", the trunnions gradually decreases on each side oi th'c sai high` point and the decrease in radius is so made that. as the clement B is bodily elevated while rolling up the inclined runways 1T; the `gradually changing" 4high point or point ot'contact of surface 20 with the bolster 1i will aina) .J ren'iain at the saine level,l The under side of theelenient li. as viewed in its iiorinal positi'oin'is t'ornnal as a counter-inriance weight. as 'indicated at 21, sothat ,the cicinentll will be returned .to central. noriiial. position artt( the release o1 the pressure at each actuation by two actions which are cumulativc. @ne oi? these actions is the natural tendencykifii the clement as an entirety to return to normal by rolling downuthc inclined runways l?. 'lhe other is ,t effect produced by' the countcrbala'ncc section 2l which will a1n'oin'ati--` cally rotate the clenient so as to -bringthe heavy part thereof down to lowerinost post tion. as indicated by the :full lines 'in Fig. l. TVith the arrangement which I have shown and described, it is evident that l obtain a side hearing comprised of a minimum number of parts, all parts ot' which can be cheaply manufactured in the forni of castings and which provides an unusually eective arrangement for returning the antifriction element to normal position entirely under the influence of gravity. The design -is such that its manufacture can he accommanner of carrying out the invention, the

saine is merely illustrative, as it is evident that the essential inventive ideas may be ernbodied in other designs than that shown and I contemplate all changes and modifications that come within the scope of the claims appended hereto.

I claim l. In a device of the character described, the combination with a retaining member, of a 'rollinof 'anti-friction element coperable with sai( retaining member, means for elevating said element as an entiretyvvhen itisrolled to either side of its central normal position so that said element will return to normal under the influence of gravity, the bearing surface of said element being formed to compensate for the elevation of the element during its rolling movementfto thereby maintain the effective bearing height at a constant level.

2.- In a'gdevice of the character described, the combination With a retaining member, of an anti-'friction element adapted for rolling movement and weighted at its under side ivhenin nprmal position, said weighted sec- .v tionof-the 'element assistingjn the return movement oi the anti-friction clementfto normal aftereach actuation thereof.

3. In a device of the character described,

'I the combination with a base -member having' oppositely arranged bearing surfaces extending upwardly'frqm each of thecenters ther'e-` i of, of an anti-friction element having coperative engagement'fwith said surfaces and adapted to be elevatedfas an entirety when it is moved to either side of normal, the active bearing surface of ,said element being so formed that the vertical height of the high pointof said bearing surface of the element in any posit1on of the latter remains constant.

4.111 a device of the character described, the combin ation with a base casting having side Walls, the latter being provided With oppositely and upwardly extended bearing adapted to coperate with an opposed bolster; and vcoperating means on said member and element adapted to elevate the latter bodily 'when it rolls to either side of normal position and thereby permitting said element to return to normal by rolling under the influence of gravity, the bearing surface of said element being so designed that 'its effective bearing height remains at a const-ant l level as it isrolled from normal. f

,- A(i. In a device of the character described,

in combination: a retaining member adapted to be secure-d to a bolster and a rolling antifriction element having'a bearing surface adapted to coperate with an opposed bolster; coperating means on said member and element arranged to elevate the latter bodily as it rolls to either side of normalposition whereby said'elementis adapted to return to .normal by rolling underjthe iniuence of gravity, the bearing surface of said clement heilig so designed that its radius varies to compensate for the bodily Aelevation of said element and maintain a bearing surface at a constant level; "and a counterbalancing Weighted 'section on said element normally in a depending position, said section being elevated as the element rolls from normal positionA and also adapted to assist in returnir.,r the lelement to normal position after each actuation.

In Witness that I claim the foregoing I have hereunto subscribed my name this 4th day of April, 1918.

WILLIAM A. BooK.

Witnesses:

WM. F. WIN'rER, ARTHUR F. PALLAS. 

